A stack of boards is 2 1/5 inches high and there are 21 boards. How many inches high is the stack?

Expand the expression 3/5 (2d+3

A migrating bird flies 494 miles in 13 hours. how many miles does it fly in 5 hours

What represents the most accurate estimation of 719-348

The figure is made up of a cylinder and a half sphere. What is the volume of the composite figure? Use 3.14 for Pi. Round to the nearest hundredth. A cylinder and half sphere. Both have a radius of 4 millimeters.

Split 3/4 into unit fractions

Dennis is going to use a number line to multiply 6 * 4. Which sentence is true about the answer? A. The answer will always be to the left of 4. B. The answer will always be to the right of 4. C. The answer will sometimes be to the left of 4. D.

Solve for v in terms of s, t, an u. U=tsv

Two cities are 2310 miles apart. a plane leaves one of? them, traveling towards the other at an average speed of 380 miles per hour. at the same time a plane leaves the? other, traveling towards the? first, at an average speed of 390 miles per hour.

What expression is equivalent to x+x+x+2

Todd ran 8 laps around a 400-meter track on monday, 4laps on tuesday, 8 laps on wednesday, 4 laps on thursday, and 8laps on friday. how many kilometers did he run?